Last spring frost
Apr 15
Frost Dates for Gratz, KY
First fall frost
Oct 24
Growing season
192 days
Hardiness zone
6b
In an average year around Gratz, KY, the last spring frost (32°F) is about Apr 15 and the first fall frost is about Oct 24, giving roughly a 192-day growing season. To be safe most years, wait until Mar 31 before setting out tender plants.
Last spring frost
Dates the last frost of spring typically ends. Plant tender crops after the risk has passed for your comfort level.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | May 13 | Apr 26 | Apr 12 |
| Freeze (32°F) | May 5 | Apr 15 | Mar 31 |
| Hard (28°F) | Apr 22 | Apr 3 | Mar 16 |
| Severe (24°F) | Apr 6 | Mar 22 | Mar 2 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 13 | May 7 | May 3 | Apr 30 | Apr 26 | Apr 23 | Apr 20 | Apr 15 | Apr 12 |
| 32°F | May 5 | Apr 27 | Apr 22 | Apr 19 | Apr 15 | Apr 12 | Apr 8 | Apr 5 | Mar 31 |
| 28°F | Apr 22 | Apr 15 | Apr 9 | Apr 5 | Apr 3 | Mar 31 | Mar 28 | Mar 23 | Mar 16 |
| 24°F | Apr 6 | Apr 1 | Mar 29 | Mar 25 | Mar 22 | Mar 18 | Mar 15 | Mar 9 | Mar 2 |
| 20°F | Mar 26 | Mar 21 | Mar 16 | Mar 13 | Mar 9 | Mar 5 | Mar 1 | Feb 24 | Feb 16 |
| 16°F | Mar 17 | Mar 11 | Mar 7 | Mar 3 | Feb 27 | Feb 22 | Feb 16 | Feb 10 | Feb 3 |
First fall frost
Dates the first frost of fall typically arrives. Count back by a crop's days-to-maturity to know your planting cutoff.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Oct 3 | Oct 15 | Oct 26 |
| Freeze (32°F) | Oct 13 | Oct 24 | Nov 5 |
| Hard (28°F) | Oct 23 | Nov 4 | Nov 17 |
| Severe (24°F) | Nov 1 | Nov 15 | Dec 3 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 3 | Oct 7 | Oct 11 | Oct 13 | Oct 15 | Oct 17 | Oct 20 | Oct 22 | Oct 26 |
| 32°F | Oct 13 | Oct 17 | Oct 20 | Oct 22 | Oct 24 | Oct 26 | Oct 29 | Nov 1 | Nov 5 |
| 28°F | Oct 23 | Oct 26 | Oct 30 | Nov 1 | Nov 4 | Nov 6 | Nov 9 | Nov 13 | Nov 17 |
| 24°F | Nov 1 | Nov 5 | Nov 8 | Nov 12 | Nov 15 | Nov 18 | Nov 22 | Nov 28 | Dec 3 |
| 20°F | Nov 9 | Nov 15 | Nov 19 | Nov 23 | Nov 28 | Dec 1 | Dec 4 | Dec 10 | Dec 18 |
| 16°F | Nov 18 | Nov 27 | Dec 1 | Dec 4 | Dec 9 | Dec 15 | Dec 21 | Dec 25 | Dec 31 |
Growing season is measured at 32°F with about 50% probability. Hardiness zone from the 2023 USDA map; frost normals from NOAA 1991-2020.
Where this data comes from
@endif These dates are computed from the nearest official weather station with long-term records: Frankfort Capital City Ap, Ky, about 16.1 miles away@if(!empty($station['elevation_ft'])), at 804 ft elevation. The further the station and the greater the elevation difference from your yard, the more your local frost timing can vary.
How we calculate these dates
Frost and freeze dates come from the NOAA 1991–2020 U.S. Climate Normals, the National Oceanic and Atmospheric Administration's 30-year averages for each weather station. A date shown at the 50% level is the median: in half of years the frost falls on or before it. The 10% and 90% columns show the early and late ends of the range, so you can plant on the odds you're comfortable with. These are long-term averages, not a forecast for this year - always check your local outlook before planting.
Source: NOAA National Centers for Environmental Information, 1991–2020 Climate Normals (public domain). Harman is not affiliated with or endorsed by NOAA.
Frequently asked questions
When is the last frost in Gratz, KY?
On average, the last spring frost (32°F) around Gratz, KY is about Apr 15. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 31.
When is the first frost in the fall?
The first fall frost around Gratz, KY typically arrives about Oct 24. Count back by a crop's days to maturity to find the latest date you can plant it.
When can I plant tomatoes and other tender crops?
Tender crops like tomatoes, peppers and basil are damaged by frost, so wait until the last spring frost has passed - around Apr 15 on average, or Mar 31 to be safe most years.
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 192 days in a typical year.
Are these dates a forecast for this year?
No. They are 30-year averages from the NOAA 1991–2020 Climate Normals, not a prediction for the current year. Use them for planning and always check your local weather forecast before planting or protecting crops.
Local weather for 40036 Planting calendar → Kentucky frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026